I have a very large flock and I can't check each one every day. I do throw scratch everyday around the farm yard and look and watch for sick or injured chickens. Well over the last month I have found 2 chickens that are lethargic and uninterested in the scratch. When I pick them up they are nothing but skin and bones. I have forced liquid and yogurt into their mouths and let them swallow it themselves. The one I found a couple of weeks ago died after a couple of days. This one I just found this morning. They are 2yo at this time and they are New Hampshire reds. Worms, maybe? The rest of the flock appears normal and healthy. Any ideas?